Chimney cowl or ventilator.



No. 700,568. Patented May 20, I902.

M. SCHWARTZ.

CHIMNEY BOWL 0R VENTILATOR.

(Apfilicatiou filed Dec. 19, 1901.)

(No Model.) 2 Shets-Sheet I I m A TTOHNE Y8 No. 700,568. Patented May 20, I902.

. M. SCHWARTZ.

CHIMNEY GOWL 0R VENTILATOR.

(Application filed Dec. 19, 1901.) (No Model.) 2 Sheots8heet 2.

A TTOHN E Y8 WITNLQ'SSES UNITE STATES PATENT OFF-roe.

or New YORIQN. Y.

CHIMNEY o'owL QR VENTILATOR.

srnorrrcnrron formingpart of Iitterjsjlatent No. 700,568, datecl May 20, 1902.

Application filed December 19, 1901.v Serial No. 86,501. (No model.)

To all whom it may concern: v

Be it known that I, MENDEL SCHWARTZ, a citizen of the Kingdom of Roumania, residing in New York, borough of Manhattan, and State of New York,have invented certain'new and useful Improvements in Ohimney-Cowls, of which the following is a specification.

This invention relates to improvements in chimney-cowls of that class in which the openin gs are provided with valves that are adapted to be closed by the force of the wind acting upon them and in which the suction in the trunk of the cowl exerted by the wind causes a draft through the openings in the sides of the cowl not directly acted upon by the wind, so that the cowl functions effectively whatever the direction of the wind and facilitates thereby the ventilation of the chimney, airduct, or other structure to be ventilated.

The invention consists of a chimney-cowl,

which comprises a main trunk provided with openings in its side walls, hinged valves adapted for opening or closing said openings, side wing extensions at the corners of the trunk of the cowl, brace-stops on said wings for supporting the valves in open position, curved rods guided in keepers on the valves,

and a vertical guide-frame to which said rods are pivoted, so as to permit the opening or closing of the valves by the raising or lowering of the guide-frame; and the invention consists, further, of a chimney-cowl provided with a hood in the main trunk of the cowl, a vertically guided and spring suspended frame supporting said hood, means for lowering or raising said guide-frame and hood, so as to open or close the upper end of the main trunk; and the invention consists,lastly, of certain details of construction and additional features, which will be fully described hereinafter and finally pointed out in the claims.

Inthe accompanying drawings, Figure 1 represents a perspective view of my improved chimney-cowl. Fig. 2 is a vertical central section thereof. Fig. 3'is a similar section, showing the valves and hood in closed position, so as to interrupt the ventilating action of the cowl; and Fig. 4 is a plan view, partly in horizontal section, on line 4 4, Fig. 3.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the tubular trunk of my improved chimney-cowl. This trunk-is made of square, oblong, or other cross-section and provided with openings a in its side walls at a suitable distance from the upper end of the trunk, as shown in Figs.- 2 and 3. The openings at are closed by means 'of valves B, which are hinged at their lower ends to the outside of the walls of the trunk A, said valves being preferably made of suitable sheet metal, like the trunk, and of sufficient size to cover the openings at. The main trunk A is provided at its corners with stationary Wings 0, that are arranged as extensions of the side walls of the trunk, said wings being preferably tapering from the upper toward the lower ends, so as to impart a better appearance to the cowl. The inner edges of the wings (J are riveted to the side walls of the trunk A, and the upper ends of two adjacent wings C are connected by angle-braces O, and the parallel wings are connected by transverse braces D, which are bent at right angles at their ends and riveted or otherwise fastened to the wings, as shown in Figs. 1 and 4, said transverse braces D serving also as rests for the valves B when they are in their normally open position, as shown in Fig. 1. Above the cowl is supported a cap or hood H, which is guided by angle-irons h, arranged to move in the corners of the upper end of the trunk A, said hood being provided with a downwardly-inclined or dishing flange h, that fits over the corresponding beveled-0E ends of the wings 0 when the hood is lowered on the same. The hood H is supported by means of straps E, secured rigidly to the central" part of the hood at their ends and to a guide frame F at their lower ends, and which latter is preferably made of two rectangular sections that cross each other centrally at right angles and are guided at their lower ends by a center rod f, adapted to move in a hole of the transverse strap f, that is supported between the two opposite side walls of the trunk A, as shown in Fig. 2. The upper end of the guide-frame F is connected by the helical spring f with the transverse strap or brace f which is attached to two opposite side walls of the trunk at the upper edges thereof. The spring f serves for suspending the guide-frame that supports the hood, and

- cowl.

it has to be of sufficient strength to maintain the same innormally raised position, as shown in Figs. 1 and 2. On the sides of the guideframe F are mounted lugs 71 for pivotally securing the pivot-straps 'i, that move in the keepers 1?, attached to the inner ends of the valves B, and are of such length as to be permanently retained in said keepers, so as to prevent their becoming disengaged.

When it is desired to lower the hood H, so as to close the cowl, the chain g is pulled in downward direction and fastened to a suitable point.

taneously the valves B close the openings a by means of the straps pivoted to the guideframe F, so as to prevent thereby any ventilation from or ingress of wind into the trunk of the cowl. The hood and valves are secured firmly in closed position during stormy weather or whenever it is-desired to shut out the outer airvfrom entering the chimney, and thus interrupt the ventilating action of the When the cowl, however, is desired to be used for ventilating the chimney or other structure to which it is applied, the chain g is released, so that the guide-frame, with the hood, is returned-under action of the spring into its normal position, as shown in Fig. 2.

Simultaneously therewith the valves are moved into their outwardly-inclined position and rest on the transverse brace-rods of the wings. When the parts of the cowl are in this position, the wind passing through v in the space between the upper end of the ,hoodand the top of the cowl produces a sucking action in the trunk, so as to permit an; egress from the side walls of the trunk and produce thereby a sucking action in the chim-i When the ney or rooms to be ventilated.

wind is of sufficient force to close the valve. on that side of thecowl which is in the direction of the wind, the air is allowed to pass out through the remaining openings in the cowl which are in the oft side from the direction of the wind.

In this manner by the In this operation the guide-frame is moved in downward direction until it is.

free motion of the hinged valves a current of wind willproduce a suction through the openings that remain unclosed in addition to the suction of the wind that passes through the space between the upper end of the trunk and the hood, so that the efiective ventilating or sucking action of 'thecowl on the space to be ventilated is carried on in areliable manner.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a chimney-cowl, the combination,with a main trunk having openings in its side walls and side extension-wings, of a vertically-adjustable hood guided over said main trunk andside extension-wings, valves for closing said openings, and means 'for operating simultaneously said valves with the adjustment of said hood, substantially as set forth.

:2. In a chimney-cowl, the combination,with a main trunk having openings in its side walls and side extension-wings, of a vertically-adjustable hood guided over said main trunk and side extension-wings, valves hinged at their bottom edges to the side walls of said main trunk, a spring-suspended means guided in said main trunkvand supporting said hood, and means connectedtherewith for operating said valves simultaneously with the adjusting of said hood, substantially as set forth.

3. The combination, with amain trunk provided with openings in its side Walls, of side extension-wings at the corners of the trunk,

valves hinged to the side walls of said trunk 4 and adapted to close the side openings in the trunk, a hood supported above the trunk, a

MEN-DEL SCHWARTZ,

Witnesses:

PAUL GoEPEL, C. BRADWAY. 

